Fatto generale: 1919 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1919 is a member of the Fibonacci-type sequence starting with 2 and 7.
Trivia: 1919 is a boring number.
Data storica: April 2nd is the day in 1902 that Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, St Petersburg.